M&C TechGroup EC-EX Operator's manual - Manual (Page 8)

8
Gas sampling and gas conditioning technology 3-4.1ME EC-EX 9904
8 INTRODUCTION
The M&C EC-EX gas cooler unit is always to be installed in situations where there is interference from
moisture in the gas to be measured and if the point of installation is declared as hazardous area (see
appendix).
Reduction of the gas temperature inside the cooler to a stable and very low dew point effects a
condensing-out of the sample gas.
9
APPLICATION
Figure 1 shows a typical example of an application for installation of an EC-EX gas cooler unit.


 

Sample gas
in
+5°C
EC-EX

  

Collecting vessel
Check-
gas in

Filter sample probe SP2000-H/Ex

3-way ball valve

Super-fine filter FP...

Heated sample line Ex-version

Peristaltic pump SR25.1/Ex

Aerosol filter CLF

EC-EX cooler

Membrane pump MP47/Ex

Flow meter FM 10

Analyser PMA50 Ex
Figure 1 Example of application of EC-EX
The gas to be measured is taken from the EC-EX gas cooler  by a gas sample probe  and cooled
down to a dew point of +5°C. The super-fine filter  located afterwards removes solid particles. For
increased operating safety of the entire system we recommend installing a super-fine filter  with a
liquid alarm sensor (for example LA1 with electronic controller type ER 142 Exi). If required an aerosol
filter  can be installed in front of the flow meter . The gas thus treated can now be passed into the
analyser .